Area of a circle: pi r^2
R: radius = half of diameter
Pi: 3.14
^2: squared
3.14^2 * 13 = 530.93
-24n+49
You multiply 7 by-12n = 84n. And the 7 by -3= -21. Then 10 by 6n = 60n and 10 by 7 which is 70. When you do all the it will give you -84n-21+60n+70. The. You combine like terms which is -84 and 60( because they both have n)= -24n and 70 with -21 which is 49. So overall the answer is -24n+49
Answer:
c is your awnser
Step-by-step explanation:
Answer: the 5 in the parentheses on the second line should be negative. Also, where did the 23 go?? That's a mistake too.
Step-by-step explanation: 3 - 8 = -5 so
23(2 - 4) + 5(3 - 8)
23(-2) + 5(-5)
(-46) + (-25)
-71
(at least, I think so unless there was a mistake in the equation)
13x−2/3x
=13x+(−2/3x)
Combine Like Terms:
=13x+(−2/3x)
=(13x+(−2/3x)
=37/3x
